Raggy Shrestha Raggy Shrestha - 3 months ago 14
C# Question

Change the borderColor of the TextBox

How can I change the BorderColor of the Textbox when a user Clicks on it or focuses on it?

Answer

try this

        bool focus = false;
        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            if (focus)
            {
                textBox1.BorderStyle = BorderStyle.None;
                Pen p = new Pen(Color.Red);
                Graphics g = e.Graphics;
                int variance = 3;
                g.DrawRectangle(p, new Rectangle(textBox1.Location.X - variance, textBox1.Location.Y - variance, textBox1.Width + variance, textBox1.Height +variance ));
            }
            else
            {
                textBox1.BorderStyle = BorderStyle.FixedSingle;
            }
        }

        private void textBox1_Enter(object sender, EventArgs e)
        {
            focus = true;
            this.Refresh();
        }

        private void textBox1_Leave(object sender, EventArgs e)
        {
            focus = false;
            this.Refresh();
        }